package com.mysiteforme.admin.module.mqtt;

import org.eclipse.paho.client.mqttv3.MqttClient;
import org.eclipse.paho.client.mqttv3.MqttConnectOptions;
import org.eclipse.paho.client.mqttv3.MqttException;
import org.eclipse.paho.client.mqttv3.MqttTopic;
import org.eclipse.paho.client.mqttv3.persist.MemoryPersistence;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Created by heqichao on 2018-7-9.
 */
public class MqttUtilTestClient {

    Logger logger = LoggerFactory.getLogger(getClass());
    public static final String HOST = "tcp://120.78.181.134:1883";
    public static final String TOPIC = "application/0000000000000001/node/0100000010000618/rx";
    private static final String clientid = "1231231234534556y5677563453431clientid";

    private String userName = "wangw";
    private String passWord = "ww1030";

    private MqttClient client;
    private MqttConnectOptions options;

    private void start() {
        try {
            // host为主机名，clientid即连接MQTT的客户端ID，一般以唯一标识符表示，MemoryPersistence设置clientid的保存形式，默认为以内存保存
            client = new MqttClient(HOST, clientid, new MemoryPersistence());
            // MQTT的连接设置
            options = new MqttConnectOptions();
            // 设置是否清空session,这里如果设置为false表示服务器会保留客户端的连接记录，这里设置为true表示每次连接到服务器都以新的身份连接
            options.setCleanSession(true);
            // 设置连接的用户名
            options.setUserName(userName);
            // 设置连接的密码
            options.setPassword(passWord.toCharArray());
            // 设置超时时间 单位为秒
            options.setConnectionTimeout(10);
            // 设置会话心跳时间 单位为秒 服务器会每隔1.5*20秒的时间向客户端发送个消息判断客户端是否在线，但这个方法并没有重连的机制
            options.setKeepAliveInterval(20);
            // 设置回调
            client.setCallback(new MqttUtilTestCallback());
            MqttTopic topic = client.getTopic(TOPIC);
            //setWill方法，如果项目中需要知道客户端是否掉线可以调用该方法。设置最终端口的通知消息
       //     options.setWill(topic, "CLOSE".getBytes(), 2, true);

            client.connect(options);
            //订阅消息
            int[] Qos  = {0};
            String[] topic1 = {TOPIC};
            client.subscribe(topic1, Qos);
            logger.info("start");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public static void main(String[] args) throws MqttException {
        MqttUtilTestClient client = new MqttUtilTestClient();
        client.start();
    }
}
